use kip-6 switch

ethcore/src/spec/spec.rs

@@ -127,6 +127,8 @@ pub struct CommonParams {
 	pub wasm_activation_transition: BlockNumber,
 	/// Number of first block where KIP-4 rules begin. Only has effect if Wasm is activated.
 	pub kip4_transition: BlockNumber,
+	/// Number of first block where KIP-6 rules begin. Only has effect if Wasm is activated.
+	pub kip6_transition: BlockNumber,
 	/// Gas limit bound divisor (how much gas limit can change per block)
 	pub gas_limit_bound_divisor: U256,
 	/// Registrar contract address.
@@ -194,6 +196,8 @@ impl CommonParams {
 			let mut wasm = ::vm::WasmCosts::default();
 			if block_number >= self.kip4_transition {
 				wasm.have_create2 = true;
+			}
+			if block_number >= self.kip6_transition {
 				wasm.have_gasleft = true;
 			}
 			schedule.wasm = Some(wasm);
@@ -309,6 +313,10 @@ impl From<ethjson::spec::Params> for CommonParams {
 				BlockNumber::max_value,
 				Into::into
 			),
+			kip6_transition: p.kip6_transition.map_or_else(
+				BlockNumber::max_value,
+				Into::into
+			),
 		}
 	}
 }

json/src/spec/params.rs

@@ -152,6 +152,9 @@ pub struct Params {
 	/// KIP4 activiation block height.
 	#[serde(rename="kip4Transition")]
 	pub kip4_transition: Option<Uint>,
+	/// KIP6 activiation block height.
+	#[serde(rename="kip6Transition")]
+	pub kip6_transition: Option<Uint>,
 }
 
 #[cfg(test)]